how many moles are in 25 g of NaCl?
0.42 mol NaCl
divide 25 g by the molar mass of nacl
ali
To determine the number of moles in a given substance, you need to know the molar mass of that substance.
In the case of NaCl (sodium chloride), the molar mass is the sum of the atomic masses of sodium (Na) and chlorine (Cl).
The atomic mass of sodium (Na) is approximately 22.99 g/mol, and the atomic mass of chlorine (Cl) is approximately 35.45 g/mol.
To calculate the molar mass of NaCl, you add the atomic masses of Na and Cl together:
Molar mass of NaCl = (22.99 g/mol) + (35.45 g/mol) = 58.44 g/mol
Now that we know the molar mass of NaCl is 58.44 g/mol, we can use this information to determine the number of moles in 25 g of NaCl.
To do this, divide the mass of NaCl by its molar mass:
Number of moles = Mass of NaCl / Molar mass of NaCl
Number of moles = 25 g / 58.44 g/mol
Calculating this:
Number of moles ≈ 0.4284 moles
Therefore, there are approximately 0.4284 moles of NaCl in 25 g.
58.44= Molar Mass of NaCl
Divide 58.44 by 25
That will give you 2.3376